Update manpages from ansible repo to show when options require args.

Update clean target Makefile so 'rm' doesn't print a useless error
when files aren't found while cleaning.

Move see also blocks to bottom of each page to include reading docs, remove 'fork me' to avoid text overlap,
simply menu nav so folks find the chapter link.

Added documentation on the 'file' module and how 'copy' and 'template' can also use the options that 'file'
provides.

Added documentation on the 'shell' module, which is a virtual module and isn't really in the library folder.
Docs build.